cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A004292 Expansion of (1+x)^2/(1-18*x+x^2).

Table of values

n a(n)
0 1
1 20
2 360
3 6460
4 115920
5 2080100
6 37325880
7 669785740
8 12018817440
9 215668928180
10 3870021889800
11 69444725088220
12 1246135029698160
13 22360985809478660
14 401251609540917720
15 7200167985927040300

List of values

[1, 20, 360, 6460, 115920, 2080100, 37325880, 669785740, 12018817440, 215668928180, 3870021889800, 69444725088220, 1246135029698160, 22360985809478660, 401251609540917720, 7200167985927040300]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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